Evolution of microbial community and key genera in the formation and stability of aerobic granular sludge under a high organic loading rate

Han Chen; Ang Li; Di Cui; Chongwei Cui; Fang Ma

doi:10.1016/j.biteb.2019.100280

Evolution of microbial community and key genera in the formation and stability of aerobic granular sludge under a high organic loading rate

Han Chen
, Ang Li
, Di Cui
, Chongwei Cui
, Fang Ma^*

^*Corresponding author for this work

School of Environment, Harbin Institute of Technology
Harbin University of Commerce

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

Aerobic granular sludge (AGS) has been frequently investigated as a novel wastewater treatment technology. This work explored the microbial community structure during aerobic granulation under an OLR of 6 kg COD (m³ d)⁻ ¹. Extracellular polymeric substances (EPS), granule size, sludge settleability and sludge morphology were also analyzed. Tightly-bound EPS significantly accumulated during aerobic granulation, when the extracellular protein played a key role in AGS due to the increasing extracellular protein/extracellular polysaccharide ratio. The microbial community diversity and richness declined sharply in the first 40 days during aerobic granulation. Flavobacteriaceae, Propionibacteriaceae, Burkholderiaceae, Rhodocyclaceae, Chitinophagaceae and norank_o_Saccharimonadales were dominant families in AGS. The EPS producers, carbohydrate degraders and glycogen accumulating organisms were key genera in the formation and stability of AGS under the high OLR condition. The results may promote the comprehension of aerobic granulation from the viewpoint of microbial community.

Original language	English
Article number	100280
Journal	Bioresource Technology Reports
Volume	7
DOIs	https://doi.org/10.1016/j.biteb.2019.100280
State	Published - Sep 2019
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Aerobic granular sludge
Extracellular polymeric substances
Key genera
Microbial community diversity
Microbial community shift
Organic loading rate

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10.1016/j.biteb.2019.100280

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title = "Evolution of microbial community and key genera in the formation and stability of aerobic granular sludge under a high organic loading rate",

abstract = "Aerobic granular sludge (AGS) has been frequently investigated as a novel wastewater treatment technology. This work explored the microbial community structure during aerobic granulation under an OLR of 6 kg COD (m3 d)− 1. Extracellular polymeric substances (EPS), granule size, sludge settleability and sludge morphology were also analyzed. Tightly-bound EPS significantly accumulated during aerobic granulation, when the extracellular protein played a key role in AGS due to the increasing extracellular protein/extracellular polysaccharide ratio. The microbial community diversity and richness declined sharply in the first 40 days during aerobic granulation. Flavobacteriaceae, Propionibacteriaceae, Burkholderiaceae, Rhodocyclaceae, Chitinophagaceae and norank\_o\_Saccharimonadales were dominant families in AGS. The EPS producers, carbohydrate degraders and glycogen accumulating organisms were key genera in the formation and stability of AGS under the high OLR condition. The results may promote the comprehension of aerobic granulation from the viewpoint of microbial community.",

keywords = "Aerobic granular sludge, Extracellular polymeric substances, Key genera, Microbial community diversity, Microbial community shift, Organic loading rate",

author = "Han Chen and Ang Li and Di Cui and Chongwei Cui and Fang Ma",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = sep,

doi = "10.1016/j.biteb.2019.100280",

language = "英语",

volume = "7",

journal = "Bioresource Technology Reports",

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TY - JOUR

T1 - Evolution of microbial community and key genera in the formation and stability of aerobic granular sludge under a high organic loading rate

AU - Chen, Han

AU - Li, Ang

AU - Cui, Di

AU - Cui, Chongwei

AU - Ma, Fang

PY - 2019/9

Y1 - 2019/9

N2 - Aerobic granular sludge (AGS) has been frequently investigated as a novel wastewater treatment technology. This work explored the microbial community structure during aerobic granulation under an OLR of 6 kg COD (m3 d)− 1. Extracellular polymeric substances (EPS), granule size, sludge settleability and sludge morphology were also analyzed. Tightly-bound EPS significantly accumulated during aerobic granulation, when the extracellular protein played a key role in AGS due to the increasing extracellular protein/extracellular polysaccharide ratio. The microbial community diversity and richness declined sharply in the first 40 days during aerobic granulation. Flavobacteriaceae, Propionibacteriaceae, Burkholderiaceae, Rhodocyclaceae, Chitinophagaceae and norank_o_Saccharimonadales were dominant families in AGS. The EPS producers, carbohydrate degraders and glycogen accumulating organisms were key genera in the formation and stability of AGS under the high OLR condition. The results may promote the comprehension of aerobic granulation from the viewpoint of microbial community.

AB - Aerobic granular sludge (AGS) has been frequently investigated as a novel wastewater treatment technology. This work explored the microbial community structure during aerobic granulation under an OLR of 6 kg COD (m3 d)− 1. Extracellular polymeric substances (EPS), granule size, sludge settleability and sludge morphology were also analyzed. Tightly-bound EPS significantly accumulated during aerobic granulation, when the extracellular protein played a key role in AGS due to the increasing extracellular protein/extracellular polysaccharide ratio. The microbial community diversity and richness declined sharply in the first 40 days during aerobic granulation. Flavobacteriaceae, Propionibacteriaceae, Burkholderiaceae, Rhodocyclaceae, Chitinophagaceae and norank_o_Saccharimonadales were dominant families in AGS. The EPS producers, carbohydrate degraders and glycogen accumulating organisms were key genera in the formation and stability of AGS under the high OLR condition. The results may promote the comprehension of aerobic granulation from the viewpoint of microbial community.

KW - Aerobic granular sludge

KW - Extracellular polymeric substances

KW - Key genera

KW - Microbial community diversity

KW - Microbial community shift

KW - Organic loading rate

UR - https://www.scopus.com/pages/publications/85075852258

U2 - 10.1016/j.biteb.2019.100280

DO - 10.1016/j.biteb.2019.100280

M3 - 文章

AN - SCOPUS:85075852258

SN - 2589-014X

VL - 7

JO - Bioresource Technology Reports

JF - Bioresource Technology Reports

M1 - 100280

ER -

Evolution of microbial community and key genera in the formation and stability of aerobic granular sludge under a high organic loading rate

Abstract

UN SDGs

Keywords

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